Documents / FOIA release
The Roswell Report: Fact versus Fiction in the New Mexico Desert was published in 1995 by Headquarters United States Air Force. It was written in response to Representative Steven H. Schiff's request and a General Accounting Office audit, and it contains Col. Richard L. Weaver's report and 1st Lt. James McAndrew's synopsis, along with attachments, appendices and photographs. The report says researchers found no evidence of an extraterrestrial craft or crew. It concludes that the 1947 debris came from a Project MOGUL balloon train.
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~. Output· of the oscillator- is both amplitude and frequency modulated, the amplitude modulation being limited by a class "0" RF·amplifier. This unit weighed six 011nces, was fed by a plate voltage of 270 volts with a filament drain of 400ma. at 1.5 volts. The output was one watt at frequencies from 25 to lOOmc. Before procurement_or a receiver with automatic frequency control an attempt was made to develop a crystal controlled oscillator to overcome the frequency drift inherent in FM systems. This work was abandoned when the controlled receiver was obtained. The crystal control unit which was developed required extreme care in tuning in order that modulation be linear. A miniature poW'er amplifier, using one dual triode as a pllsh-pull amplifier was const~tcted for use at 25 to lOOmc with any of the above mentioned transmitters. The antennae for these transmitters was a halt-wave vertical dipole. The receiver found satisfactory for these systems was the R-2A/ARR-3 Sonobuoy receiver. This t~it employs Automatic frequency control and will tolerate a drift - .J5mc before retuning is required. When SCR-658 radio direction finding equipment became available work on these transmitters was abandoned and a 400mc transmitter used. This system allows for accurate positioning of the balloon systems by use of crossed azemuths tram se.eral receiving stations. A transmitter using pulse time modulation was designed for use with this receiving equipment. The advantages here are high peak power with relatively low input power (and thus a high signal to noise ratio) and simultaneous transmission of several data channels at one frequency. This project was abandoned before tests could be completed due to a modification or project reqt irements, but preliminary results indicated that this system wo1tld be advantageous in AM or FM transmissiOn. This syatem makes use or sho~t duration pulses ( .5 micro second) at .a repetition rate or approximately 10 kc. For long range transmission or information an amplitude-modulated transmitter was developed. (Fig. 6) This unit, the AM-1, is crystal controlled, employing a 3A4 miniatnre tube in a Pierce oscillator · circuit as the crystal oscillator. This circuit does no.t require · an LC tank circuit and eliminates the tuning of this additional stage. The RF amplifier is ·a 3A5 miniature dual triode tube. The unit was designed to give lS watt output with a 270 volt plate supply and can be used with 380 volts to give 3 watt o1itput.
FOIA release, from the osd collection. The PDF is mirrored here; the original link is under it. 993 pages are in the text index: search them above, or from the library's search.